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An uncompensated control system with unity feedback has a plant transfer function
We want to have a velocity error constant of Kv - 20. We also want to have a phase margin of approximately 45° and a closed-loop bandwidth greater than ω= 4 rad/s. Use two identical cascaded phase-lead networks to compensate the system.
Suppose that in a lottery you choose 5 numbers out of 47. Five numbers are then drawn and you win a prize if you have at least 3 of the 5 numbers. What is the probability that you win something?
Construct a 98% confidence interval for the population mean and interpret the result (round margin of error E to the nearest dollar).
a student conducted a survey of credit card usage by 25 of her friends. each subject was asked how many times he or she
The Texas Transportation institute at texas A&M university conducted a survey to determine the number of hours per year drivers wasted sitting in traffic. the table below shows the number of hours wasted per year sitting in traffic.
A biologist studying wolves wants to find a correlation between the lifespan of wolves and the geographic latitude of their habitats. How many variables are involved in such an analysis?
A chi-square test for goodness of fit is used to test whether or not there are any preferences among 3 brands of cola.
A recent research report shows that the percentage of college students who have been reported for plagiarizing has reached 30% each in the colleges of Education, Arts and Sciences, and Business, but only 10% in the School of Law.
According to a survey 41 % of major US companies electronically monitor their employees. Suppose that 5 such companies are selected independently and at random.
Describe a Bernoulli experiment and give two examples. What is the connection between a Bernoulli experiment and a binomial distribution? Explain.
mr green harvested pumpkins for selling at four markets. he sold one-fifth of his crop at the first markey 40 at the
A researcher is estmating influence of treatment using sample selected from normally distributed population with mean of µ = 80 and standard deviation of σ = 20. Calculate power of test if researcher uses sample of n = 25 individuals.
Consider a dipole of strength D, oriented along the x-axis and located at the point x = ε/2, y = 0, z = 0, and a dipole of strength -D, oriented along the x-axis at the point x = - ε /2, y = 0, z = 0. Write the expression for the potential for thes..
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